19. Condition monitoring and supervision functions
Table 88. Circuit-breaker condition monitoring (SSCBR)
Characteristic Value
Current measuring accuracy ±1.5% or ±0.002 × In
(at currents in the range of 0.1…10 × In)
±5.0%
(at currents in the range of 10…40 × In)
Operate time accuracy ±1.0% of the set value or ±20 ms
Travelling time measurement +10 ms / -0 ms
Table 89. Runtime counter for machines and devices (MDSOPT)
Description Value
Motor runtime measurement accuracy
66
±0.5%
20. Measurement functions
Table 90. Three-phase current measurement (CMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: fn ±2 Hz
±0.5% or ±0.002 × In (at currents in the range of 0.01...4.00 × In)
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
RMS: no suppression
Table 91. Sequence current measurement (CSMSQI)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: f/fn = ±2 Hz
±1.0% or ±0.002 × In
at currents in the range of 0.01...4.00 × In
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
RMS: no suppression
Table 92. Residual current measurement (RESCMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f/fn = ±2 Hz
±0.5% or ±0.002 × In
at currents in the range of 0.01...4.00 × In
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 93. Three-phase voltage measurement (VMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the voltage measured: fn ±2 Hz At voltages in
range 0.01… 1.15 × Un
±0.5% or ±0.002 × Un
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 94. Residual voltage measurement (RESVMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: f/fn = ±2 Hz
±0.5% or ±0.002 × Un
66 Of the reading, for a stand-alone , without time synchronization
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